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) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30605-980f9eb85c) Lines: 1467 1530 95.9 % Date: 2026-01-11 09:21:30 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296167
RgX_gtofp_bit	7029036
RgX_normalize1	35731
X2XP1	5990179
ZX_Uspensky	1313810
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15201
ZX_graeffe	5390
ZX_realroots_irred	48562
ZX_rescale2prim	2233696
ZX_sturm	6395
ZX_sturm_i	122974
ZX_sturm_irred	116579
ZX_sturmpart	1128315
ZX_to_ZiX	16450481
ZiX_sqr	99010020
_gen_nored	11199532
_gen_one	14468136
_gen_zero	326039
_intervalcmp	0
_mp_add	24662928
_mp_cmul	34761516
_mp_mul	4374466
_mp_sqr	6298115
_mp_sub	0
_sqrtnr	22591
a_posteriori_errors	536973
abs_update	8003782
abs_update_r	778517
all_roots	535872
append_clone	1613514
bkeval_single_power	5234619
check_ab	1178942
checkbound	2355014
checkvalidpol	266890
clean_roots	535912
cleanroots	231763
cmp_complex_appr	2237222
conformal_basecase	1403484
conformal_mapping	467789
conformal_pol	1403605
dblexp	6547241
dbllog2	302034052
dft	502231
dual_modulus	1012187
eval_rel_pol	13134315
fft	14155375
fft2	7462
findpower	40945055
fix_roots	536973
fix_roots1	398347
fujiwara_bound	2271072
fujiwara_bound_real	1406785
graeffe	49496339
homothetie	1609622
homothetie2n	9954487
homothetie_gauss	36488496
ind_maxlog2	902431
initdft	996073
isexactpol	239753
isexactscalar	931714
isreal	961631
isvalidcoeff	1228143
logmax_modulus	4449552
logmin_modulus	1614357
logmodulus	606550
logpre_modulus	606547
logradius	493841
lower_bound	40944541
mydbllog2i	226369215
mydbllog2r	56170659
mydbllogr	9544470
mygprec	63741266
mygprec_absolute	4337463
mygprec_special	536984
mygprecrc	215124443
mygprecrc_special	2178254
myshiftic	135802142
myshiftrc	35494932
newton_polygon	5505244
optimize_split	493844
parameters	493841
pol_to_gaussint	17583779
polgraeffe	14
polmod_to_embed	84
polrootsbound	27130
polrootsbound_i	27123
polsolve	166692
quicktofp	6976906
realroots	50627
refine_F	502230
refine_H	2459929
root_error	1911607
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288192
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494209
split_0_1	468152
split_0_2	468154
split_1	467790
split_2	493843
split_complete	1525390
split_fromU	493844
split_pols	166684
splitcauchy	166690
splitpoleval	5235199
tocomplex	1213159
update_radius	493844
usp	1125980

Generated by: LCOV version 1.16