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 30764-6b81f1f3fa) Lines: 1467 1530 95.9 % Date: 2026-03-25 09:26:52 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296311
RgX_gtofp_bit	7048107
RgX_normalize1	35705
X2XP1	5990901
ZX_Uspensky	1313908
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15204
ZX_graeffe	5439
ZX_realroots_irred	48574
ZX_rescale2prim	2233919
ZX_sturm	6395
ZX_sturm_i	123072
ZX_sturm_irred	116677
ZX_sturmpart	1128303
ZX_to_ZiX	16490321
ZiX_sqr	99233582
_gen_nored	11210798
_gen_one	14476798
_gen_zero	326024
_intervalcmp	0
_mp_add	24665647
_mp_cmul	34785283
_mp_mul	4374663
_mp_sqr	6298839
_mp_sub	0
_sqrtnr	22598
a_posteriori_errors	537467
abs_update	8020766
abs_update_r	780149
all_roots	536367
append_clone	1616173
bkeval_single_power	5236515
check_ab	1178930
checkbound	2354990
checkvalidpol	267214
clean_roots	536414
cleanroots	231763
cmp_complex_appr	2241503
conformal_basecase	1406467
conformal_mapping	468784
conformal_pol	1406586
dblexp	6562611
dbllog2	304079526
dft	503325
dual_modulus	1014480
eval_rel_pol	13168421
fft	14193998
fft2	7462
findpower	41031600
fix_roots	537469
fix_roots1	398789
fujiwara_bound	2272011
fujiwara_bound_real	1406972
graeffe	49608297
homothetie	1613568
homothetie2n	9979199
homothetie_gauss	36565395
ind_maxlog2	904327
initdft	998260
isexactpol	240103
isexactscalar	934017
isreal	963716
isvalidcoeff	1230445
logmax_modulus	4458689
logmin_modulus	1617702
logmodulus	608228
logpre_modulus	608226
logradius	494928
lower_bound	41031689
mydbllog2i	226904404
mydbllog2r	57613368
mydbllogr	9565124
mygprec	63864953
mygprec_absolute	4344233
mygprec_special	537475
mygprecrc	215571416
mygprecrc_special	2181410
myshiftic	136145942
myshiftrc	35578220
newton_polygon	5520813
optimize_split	494934
parameters	494934
pol_to_gaussint	17627234
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166712
quicktofp	6981463
realroots	50627
refine_F	503322
refine_H	2464594
root_error	1914415
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297406
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495295
split_0_1	469154
split_0_2	469154
split_1	468784
split_2	494933
split_complete	1528080
split_fromU	494934
split_pols	166706
splitcauchy	166714
splitpoleval	5236688
tocomplex	1215883
update_radius	494933
usp	1126098

Generated by: LCOV version 1.16