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 30678-a23e500d22) Lines: 1467 1530 95.9 % Date: 2026-02-15 09:22:35 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296177
RgX_gtofp_bit	7029569
RgX_normalize1	35733
X2XP1	5990077
ZX_Uspensky	1313719
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15202
ZX_graeffe	5390
ZX_realroots_irred	48567
ZX_rescale2prim	2233645
ZX_sturm	6395
ZX_sturm_i	122976
ZX_sturm_irred	116581
ZX_sturmpart	1128223
ZX_to_ZiX	16448889
ZiX_sqr	99017403
_gen_nored	11204704
_gen_one	14473909
_gen_zero	326033
_intervalcmp	0
_mp_add	24665174
_mp_cmul	34772933
_mp_mul	4374638
_mp_sqr	6298270
_mp_sub	0
_sqrtnr	22595
a_posteriori_errors	536992
abs_update	8004113
abs_update_r	778575
all_roots	535892
append_clone	1613591
bkeval_single_power	5235537
check_ab	1178850
checkbound	2354830
checkvalidpol	266892
clean_roots	535934
cleanroots	231763
cmp_complex_appr	2237379
conformal_basecase	1403559
conformal_mapping	467816
conformal_pol	1403679
dblexp	6547615
dbllog2	302089078
dft	502258
dual_modulus	1012247
eval_rel_pol	13135294
fft	14156185
fft2	7462
findpower	40946485
fix_roots	536998
fix_roots1	398363
fujiwara_bound	2271137
fujiwara_bound_real	1406688
graeffe	49502743
homothetie	1609723
homothetie2n	9955127
homothetie_gauss	36489492
ind_maxlog2	902488
initdft	996127
isexactpol	239753
isexactscalar	931714
isreal	961683
isvalidcoeff	1228149
logmax_modulus	4449753
logmin_modulus	1614420
logmodulus	606594
logpre_modulus	606591
logradius	493863
lower_bound	40947303
mydbllog2i	226395841
mydbllog2r	56171919
mydbllogr	9545049
mygprec	63745738
mygprec_absolute	4337753
mygprec_special	537001
mygprecrc	215135616
mygprecrc_special	2178366
myshiftic	135850876
myshiftrc	35497889
newton_polygon	5505663
optimize_split	493869
parameters	493867
pol_to_gaussint	17585035
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166693
quicktofp	6977202
realroots	50627
refine_F	502250
refine_H	2460072
root_error	1911712
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288417
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494225
split_0_1	468174
split_0_2	468176
split_1	467816
split_2	493867
split_complete	1525451
split_fromU	493868
split_pols	166689
splitcauchy	166701
splitpoleval	5236028
tocomplex	1213246
update_radius	493867
usp	1125965

Generated by: LCOV version 1.16