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 30674-be81ecfdd4) Lines: 1467 1530 95.9 % Date: 2026-02-12 09:23:52 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296175
RgX_gtofp_bit	7029559
RgX_normalize1	35733
X2XP1	5989765
ZX_Uspensky	1313727
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15198
ZX_graeffe	5390
ZX_realroots_irred	48562
ZX_rescale2prim	2233531
ZX_sturm	6395
ZX_sturm_i	122974
ZX_sturm_irred	116577
ZX_sturmpart	1128209
ZX_to_ZiX	16455463
ZiX_sqr	99022273
_gen_nored	11206461
_gen_one	14471779
_gen_zero	326002
_intervalcmp	0
_mp_add	24663664
_mp_cmul	34775735
_mp_mul	4374553
_mp_sqr	6298238
_mp_sub	0
_sqrtnr	22588
a_posteriori_errors	536983
abs_update	8004849
abs_update_r	778562
all_roots	535890
append_clone	1613577
bkeval_single_power	5235090
check_ab	1178857
checkbound	2354844
checkvalidpol	266892
clean_roots	535932
cleanroots	231763
cmp_complex_appr	2237365
conformal_basecase	1403590
conformal_mapping	467823
conformal_pol	1403709
dblexp	6547708
dbllog2	302146668
dft	502264
dual_modulus	1012259
eval_rel_pol	13135068
fft	14157078
fft2	7462
findpower	40950128
fix_roots	536987
fix_roots1	398359
fujiwara_bound	2271113
fujiwara_bound_real	1406689
graeffe	49505310
homothetie	1609738
homothetie2n	9955327
homothetie_gauss	36495920
ind_maxlog2	902487
initdft	996138
isexactpol	239753
isexactscalar	931714
isreal	961697
isvalidcoeff	1228149
logmax_modulus	4449886
logmin_modulus	1614482
logmodulus	606588
logpre_modulus	606593
logradius	493876
lower_bound	40950358
mydbllog2i	226434964
mydbllog2r	56174056
mydbllogr	9545825
mygprec	63748319
mygprec_absolute	4337684
mygprec_special	536995
mygprecrc	215159536
mygprecrc_special	2178331
myshiftic	135892352
myshiftrc	35499077
newton_polygon	5505653
optimize_split	493876
parameters	493873
pol_to_gaussint	17585214
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166692
quicktofp	6976940
realroots	50627
refine_F	502261
refine_H	2460106
root_error	1911690
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288492
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494238
split_0_1	468186
split_0_2	468186
split_1	467822
split_2	493873
split_complete	1525463
split_fromU	493875
split_pols	166689
splitcauchy	166697
splitpoleval	5235365
tocomplex	1213243
update_radius	493872
usp	1125901

Generated by: LCOV version 1.16