Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 94.1 % 1561 1469 Test Date: 2026-09-21 17:02:41 Functions: 96.7 % 121 117 Legend: Lines:     hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
polgraeffe	0
scalepol2n	0
RgX_Graeffe	14
ZX_Uspensky_equal_yes	14
polgraeffe0	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5460
ZX_sturm	6395
fft2	7462
roots	8382
ZX_deg1root	15275
_sqrtnr	22878
polrootsbound_i	27800
polrootsbound	27807
RgX_normalize1	36408
ZX_realroots_irred	48670
realroots	50631
ZX_sturm_irred	117167
ZX_sturm_i	123562
polsolve	166990
split_pols	166990
splitcauchy	166990
solve_exact_pol	231621
cleanroots	231875
isexactpol	240229
roots_com	240229
roots_aux	240257
checkvalidpol	268043
QX_complex_roots	297210
_gen_zero	326083
fix_roots1	398950
conformal_mapping	469135
split_1	469135
split_0_1	469507
split_0_2	469507
logradius	495267
optimize_split	495267
parameters	495267
split_2	495267
split_fromU	495267
update_radius	495267
split_0	495639
dft	503707
refine_F	503707
all_roots	537397
clean_roots	537439
a_posteriori_errors	538498
fix_roots	538498
mygprec_special	538498
logmodulus	608822
logpre_modulus	608822
abs_update_r	781158
ind_maxlog2	904870
isexactscalar	934563
isreal	964402
initdft	998974
dual_modulus	1015226
usp	1127975
ZX_sturmpart	1129052
check_ab	1179683
tocomplex	1219393
isvalidcoeff	1235245
ZX_Uspensky	1315153
conformal_basecase	1407524
conformal_pol	1407643
fujiwara_bound_real	1408262
split_complete	1529776
homothetie	1614921
logmin_modulus	1618130
append_clone	1618805
root_error	1919275
mygprecrc_special	2185073
ZX_rescale2prim	2237810
cmp_complex_appr	2249824
fujiwara_bound	2276767
checkbound	2356496
refine_H	2466335
scalepol	4300611
mygprec_absolute	4356143
_mp_mul	4430508
logmax_modulus	4461100
bkeval_single_power	5250403
splitpoleval	5250403
newton_polygon	5526613
X2XP1	6001383
_mp_sqr	6349893
dblexp	6569351
quicktofp	7000127
RgX_gtofp_bit	7056002
abs_update	8028100
mydbllogr	9573763
homothetie2n	9987713
_gen_nored	11268048
eval_rel_pol	13181262
fft	14225407
_gen_one	14524760
ZX_to_ZiX	16455357
pol_to_gaussint	17642362
_mp_add	24942127
_mp_cmul	35116850
myshiftrc	35615719
homothetie_gauss	36602518
findpower	41063618
lower_bound	41063618
graeffe	49673424
mydbllog2r	58107738
mygprec	63981070
ZiX_sqr	99346848
myshiftic	136510100
mygprecrc	215738839
mydbllog2i	227080065
dbllog2	304771505

Generated by: LCOV version 2.0-1